Combination lock



N LUCKOW COMBINATION LOCK. APPLICATION men mm. 30, 1921.

Patented Oct. 24, 1922.

Patented Qct. 121 i, 1922.

NIKOLAJ LUCKO'W, OF NEW YORK, N. Y.

COMBINATION LOCK.

Application filed March 30, 1921.

T 0 all whom it may concern:

Be it known that I, NIKOLAJ Lucnow a citizen of Poland, residing at New York, 1n the county of New York and State of New York, have invented certain new and useful Improvements in Combination Locks, of which the follo "ing is a specification.

The main object of this invention is the provision of a combination pad-lock having means for manipulation such as will insure its security against unauthorized persons.

The above and other objects will become apparent in the description below, in which like-named characters of reference refer to like-named parts in the drawings.

Referring briefly to the drawings, Fig. 1

is a front elevational view, partly in section,

of the lock.

Fig. 2 is a side elevational view of the same.

Fig. 3 is a front elevational view of the same, partly in section, in extended or open position.

Fig. l is a plan view of one of the ring tumblers in detail.

Fig. 5 is a view illustrative of the application of my lock.

Referring in detail to the drawings, the numeral 1 represents a cylindrical pin rigid with a bar 3, a flat arm 5 being rigid with the other end of said bar, substantially parallel to the pin 1, said arm having a hooked head 5 removably held in a corresponding recess in the outer side of bar 3 by a set screw 3. A. second bar 2 has a sleeve 4 rigid with one end, adapted to receive the pin or arm 1. A sleeve 6 is rigid with the upper end of the bar 2, this sleeve having a slot 8 extending along the bottom thereof throughout its length.

The arm 5 is provided with a series of teeth 7, these teeth being, as shown, bevelled on their front and. rear edges, the arm being slidable in the sleeve 6 and the teeth slidable at the same time in the slot 8. plurality of tumbler rings 9 having interior slots 10, of a width slightly greater than the width of the teeth T. are rotatably mounted upon the sleeve 6. Each of these tumbler rings are provided with letters or numbers in order to guide the person manipulating the lock, in order that they may be arranged in definite Serial No. 457,153.

sequence, it being understood that a certain character on the ring is placed relative to the slot it contains so that the rings may be arranged to present a continuous row of slots by a person familiar with the combinat1on.

In order to set the lock, the rings 9 are all aligned with the slots 10, registering with the slot 8, as shown in Fig. 3. The arms 5 and l are inserted in the sleeves 6 and 4 respectively, the teeth of the former passing through both the slot 8 and the registered slots 10. Each of the rings is recessed as indicated at 11; when the arms 5 and l have been forced as far as possible into their respective sleeves, each tooth 'Z is disposed within the bounds of the recess 11 of its adjacent ring 9. Thereupon the rings are severally rotated about the sleeve 6, so as to upset the previous registering of the teeth 7 with the slots 10, thus preventing withdrawal of the arm 5. However, upon resetting the rings 9 into the proper position, as indicated by the alignment of various letters or numerals on the outside of the rings, the arm 5 may be withdrawn.

Due to the peculiar shape of the teeth it will be seen that they will readily pass from the recesses into the slots and thus the lock is easily operated.

I claim:

A look comprising a pair of side plates, a bar fixed in the end of one of said plates, an arm removably engaged in the other end of the same plate, said arm having a hook element fitting a recess in said plate, a set screw in said plate for clamping said arm, sleeves fixed in the other plate receptive of said bar and arm, one of said sleeves being slotted longitudinally, a plurality of tum blers rotatable on said slotted sleeve, each tumbler containing an annular recess in its side and a slot leading therethrou'gh, means for maintaining said tumblers on said sleeve, and a plurality of bevelled teeth disposed in register on the entering arm, said teeth be ing rotatable in the mentioned recesses and shaped to pass through the mentioned slots when said tumblers are in a definite position.

In witness whereof I affix my signature.

NIKOLAJ LUcKow. 

